Timing default, backfire won't run?! |
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Tizzyusmc
Member Joined: 08 May 2014 Location: Arkansas Status: Offline Points: 101 |
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Posted: 20 Aug. 2014 at 4:54am |
Per the manual we set timming to correct points as well as made sure our pump was installed correctly. She wants to fire but we are only getting backfires no actual running. We are so lost we have been both directions with distbuter...advancing to no back fire then retarding to back firing. We have done as everyone has suggested moving wires but nothing. We go back to per manual install and get back firing. Rotor shows IO at cyl 1 comp and doing 2 full turns we result in IGN. Per manual this is correct. But yet will not run....any suggestions?
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first46
Member Joined: 15 Dec. 2013 Location: Northbrook Status: Offline Points: 83 |
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Sounds although the valves are sticking.
Brian |
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Tizzyusmc
Member Joined: 08 May 2014 Location: Arkansas Status: Offline Points: 101 |
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What's is the corrective action for this, if that's the case? Please speak slowly and loudly in to the mic....so I can understand.
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micjen
Member Joined: 12 July 2014 Location: Brisbane Qld Status: Offline Points: 164 |
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You haven't stripped a fibre cam gear by any chance?? Just take off the tappet side cover and spin the motor over to see if the valves in number 4 cylinder are on rock-over when the number 1 piston is at TDC.
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CJ2A rebuilder. Let the Willys Jeep live again.
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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You indicated that when "IGNITION" appears in the window, the rotor is pointing to 5:00 O'clock. That should be the #1 position. Your wires are installed in the cap, counting counterclockwise...Trust me...I'm not doubting you...just slowly and carefully put your hand on #1 and trace it to the plug. Do the same for the others, moving counter clockwise around the cap. 1 - 3 - 4 - 2. Everyone around here has had to do it this way at one time or another.
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micjen
Member Joined: 12 July 2014 Location: Brisbane Qld Status: Offline Points: 164 |
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A rather crude but effective way to sort out timing issues is to simply take out spark plug number 1. Then put finger on hole and turn the pulley till proper compression is felt and then stop when no more. Timing marks should line up. Also the points should just be opening and rotor should be close to number one terminal in the dizzy. Then simply put on leads in the usual 1 3 4 2 to suit. Note flywheel can be installed 180* out this should remedy this. This is the starting point providing nothing unusual is going on. A compression test would eliminate valves. Simple observation mostly everything else. Please note. I do not recommend putting anything down the spark plug hole to find tdc. Bound to end badly.
Edited by micjen - 20 Aug. 2014 at 11:22am |
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CJ2A rebuilder. Let the Willys Jeep live again.
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Oilleaker1
Member Joined: 06 Sep. 2011 Location: Black Hills, SD Status: Offline Points: 4406 |
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If using the rear timing hole in the motor plate, do not forget that the flywheel can be installed with the timing marks 180 degrees off! You would have to then change your wires at the distributor to match this timing. Find # 1 at TDC and start # one wire where the rotor is pointing and do as Scout said counterclockwise 1342. John
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Green Disease, Jeeps, Old Iron!
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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I am guilty of this...and more times than I care to admit...but are your sure you are installing the spark wires in the counter clockwise order?
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smfulle
Member Sponsor Member Joined: 16 Sep. 2010 Location: Ogden, Utah Status: Offline Points: 6123 |
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Whenever I have a timing question or issue I go back to Sean's GEICO timing protocol found in the Tech - FACs section of this Tech Questions forum.
Edited by smfulle - 20 Aug. 2014 at 4:43pm |
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micjen
Member Joined: 12 July 2014 Location: Brisbane Qld Status: Offline Points: 164 |
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One other possibility is the points are installed incorrectly (number 9 in below illustration) especially with the 2 piece type all insulating washers must be placed correctly including any through the dizzy housing or the condensor (number 6 in below illustration) is defective.
That problem with the insulating washer on 2 piece points I have come across and simply fixed it by putting another fibre washer to isolate the lead going into dizzy. (See 28 on the illustration below) Sometimes the earth lead (sometimes present but excellent idea to install if not) between plate and dizzy can be broken as well. A defective condensor can cause one all mighty backfire. I had one backfiring every revolution even though it was running. Thought the leads were crossed at first. Edited by micjen - 20 Aug. 2014 at 10:33pm |
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CJ2A rebuilder. Let the Willys Jeep live again.
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Tizzyusmc
Member Joined: 08 May 2014 Location: Arkansas Status: Offline Points: 101 |
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We couldn't figure it out fellas...we dropped of off at shop in escondido, ca
Hot rods custom stuff. I'm extremely confident they will get us fixed up. They specialize in flat head and old v8's, plus they had a ton of really nice hot rods sitting there when I pulled up. Check out thier website and tell me what you think. http://www.hotrodscustomstuff.com/ |
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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You will report back to us as to what they find, right?
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Tizzyusmc
Member Joined: 08 May 2014 Location: Arkansas Status: Offline Points: 101 |
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Yes Sir, I did as you posted scoutpilot- still no running only back firing. Richard from the shop called me earlier and let me know it'll be a few days. So ill keep y'all posted- |
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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Like you, can't wait.
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Tizzyusmc
Member Joined: 08 May 2014 Location: Arkansas Status: Offline Points: 101 |
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Pump indexed wrong and points in distributor were messed up.....guess the book we were using was not correct or we just messed it up. Either way the shop got it running today! Hopefully I can pick it up tomorrow guess my carb had issues too.
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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Good deal.
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woodshopguy
Member Joined: 20 Feb. 2008 Location: Pottstown, PA Status: Offline Points: 708 |
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Can someone elaborate on this?? pump indexed wrong I understand . . . but doesn't the distributor only go into it one way? It would just mean that your #1 firing position is not stock . . . I am not doubting, just trying to understand so I can avoid the same mistake or at least learn better troubleshooting .. . .
-Doug. |
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#33468 Column Shift
42 GPW on the TO DO list Bantam #259 3.25 @ Bantam Trailers (Also TO DO) 41 Ford Coupe coming along slowly |
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1955cj5
Member Joined: 21 Sep. 2012 Location: SW Idaho Status: Offline Points: 346 |
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I think you are correct....with #1 piston at TDC, where ever the rotor points is number 1, and the firing order would then be counterclockwise from there...
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